Fix #1528

[yunstanford]

Fix #1528

[codecov]

Codecov Report

Merging #1549 into master will increase coverage by 0.05%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1549      +/-   ##
==========================================
+ Coverage   91.43%   91.48%   +0.05%     
==========================================
  Files          18       18              
  Lines        1797     1796       -1     
  Branches      341      341              
==========================================
  Hits         1643     1643              
  Misses        130      130              
+ Partials       24       23       -1

Impacted Files	Coverage Δ
sanic/app.py	92.23% <ø> (-0.02%)	⬇️
sanic/request.py	99.54% <100%> (ø)	⬆️
sanic/router.py	95.89% <0%> (+0.45%)	⬆️

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